China | A Very Nice Algebra Problem | Math Olympiad
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Russia | A Nice Algebra Simplification | 2 Methods
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A difficult olympiad math problem | China Math Olympiad Questions
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Mathématiques 1232
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Canada | Math Olympiad | A Nice Algebra Problem
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Test d'entrée à l'université de Harvard
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Nice Radical Math problem | Find value of ‘a’
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Japan | A Nice Algebra Problem
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